#include "WebRTCClientPage.h"
#include "BoostLog.h"
#include <Wt/WApplication.h>
#include <Wt/WEnvironment.h>
#include <Wt/WLabel.h>
#include <Wt/WLineEdit.h>
#include <Wt/WPushButton.h>
#include <Wt/WServer.h>
#include <Wt/WTextArea.h>
#include <format>
#include <random>

#include "js/WebRTCClient.js"

WebRTCClientPage::WebRTCClientPage() : Wt::WTemplate(tr("Wt.WebRTC.Home")) {
    using namespace Wt;
    WApplication *app = WApplication::instance();
    LOAD_JAVASCRIPT(app, "js/WebRTCClient.js", "WebRTCClient", wtjs1);

    addStyleClass("bulma-is-flex-grow-1 bulma-is-flex bulma-is-flex-direction-column");
    auto localId = randomId(4);
    bindNew<Wt::WLabel>("localId")->setText(localId);

    auto textBrowser = bindNew<Wt::WTextArea>("textBrowser");
    textBrowser->setReadOnly(true);

    auto offerId = bindNew<Wt::WLineEdit>("offerId");
    offerId->setDisabled(true);

    auto offerBtn = bindNew<Wt::WPushButton>("offerBtn");
    offerBtn->setText("Offer");
    offerBtn->setDisabled(true);

    auto sendMsg = bindNew<Wt::WLineEdit>("sendMsg");
    sendMsg->setDisabled(true);

    auto sendBtn = bindNew<Wt::WPushButton>("sendBtn");
    sendBtn->setText("发送");
    sendBtn->setDisabled(true);

    // clang-format off
    // std::string url = "ws://127.0.0.1:8081/api/v1/webrtc/signal";
    std::string url = std::format("{}://{}/api/v1/webrtc/signal", app->environment().urlScheme() == "https" ? "wss" : "ws", app->environment().hostName());
    setJavaScriptMember(" WebRTCClient", std::format("new {}.WebRTCClient({},{},{},{},{},{},{}, '{}', '{}');", WT_CLASS, WT_CLASS,
        jsRef(), offerId->jsRef(), offerBtn->jsRef(), sendMsg->jsRef(),sendBtn->jsRef(), textBrowser->jsRef(), localId, url));
    // clang-format on
}

std::string WebRTCClientPage::randomId(size_t length) {
    using std::chrono::high_resolution_clock;
    static thread_local std::mt19937 rng(static_cast<unsigned int>(high_resolution_clock::now().time_since_epoch().count()));
    static const std::string characters("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
    std::string id(length, '0');
    std::uniform_int_distribution<int> uniform(0, int(characters.size() - 1));
    std::generate(id.begin(), id.end(), [&]() { return characters.at(uniform(rng)); });
    return id;
}